ChatGPT API and LangChain Power Retrieval-Augmented Generation Pipeline

Jun 26, 2025
Towards Data Science
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Summary

ChatGPT API and LangChain enable a Retrieval-Augmented Generation pipeline that generates accurate responses by retrieving relevant context from local text files stored in a FAISS vector database, showcasing the power of integrating large language models with external data sources.

Key Points

  • ChatGPT API and LangChain are utilized to build a Retrieval-Augmented Generation (RAG) pipeline
  • RAG allows generating accurate responses by retrieving relevant information from external data sources
  • The pipeline loads local text files, generates embeddings, stores them in a FAISS vector database, and retrieves relevant context for queries

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